53147065 has 4 divisors (see below), whose sum is σ = 63776484. Its totient is φ = 42517648.

The previous prime is 53147063. The next prime is 53147071. The reversal of 53147065 is 56074135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21427641 + 31719424 = 4629^2 + 5632^2 .

It is a cyclic number.

It is not a de Polignac number, because 53147065 - 2¹ = 53147063 is a prime.

It is a super-2 number, since 2×53147065² = 5649221036228450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53147063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5314702 + ... + 5314711.

It is an arithmetic number, because the mean of its divisors is an integer number (15944121).

Almost surely, 2^53147065 is an apocalyptic number.

It is an amenable number.

53147065 is a deficient number, since it is larger than the sum of its proper divisors (10629419).

53147065 is a wasteful number, since it uses less digits than its factorization.

53147065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10629418.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 53147065 is about 7290.2033579318. The cubic root of 53147065 is about 375.9756873709.

The spelling of 53147065 in words is "fifty-three million, one hundred forty-seven thousand, sixty-five".